Over the last year, the surge of Germany’s radical far-right has been celebrated by both Donald Trump and Elon Musk. This week, the anti-immigration, pro-Russia group Alternative für Deutschland (AfD) won the most votes in the state election of Mecklenburg-Western Pomerania, the third time it has emerged as the strongest party in a region. The party is set to remain shut out of power in the state because of a “firewall” of non-cooperation agreed by the other main parties. With rising fears that the AfD could become the first far-right party to hold state power since the Second World War,...